package ru.store.book;

import java.util.List;

public interface IBookStore {
	public int getTotalAmount();
	public void addBook(Book book) throws Exception;
	public List<String> getAuthors();
	public List<String> getTitles();
	public List<Book> findByAuthor(String author);
	public List<Book> findByTitle(String title);
	public void sellBook(String isdn, int count) throws Exception;
}
